No, the activation key should not be used more than once.
No, the activation key should not be used more than once.
You can try using the key on your own PC, but it might not work properly. For another key, you can purchase one from an authorized retailer or online store that sells genuine Windows product keys.
It isn't possible to use it across several computers simultaneously. A new key must be purchased from an approved seller.
Occasionally yes, it works. I’ve used the same Windows 10 Pro license on two computers at once before without any problems. However, this isn’t guaranteed every time. If you’re looking for a budget option, /r/MicrosoftSoftwareSwap is a good place to check—they provided me with my Windows 8.1 Pro key that I’ve relied on for nearly three years without issues.
Work is possible, though I’d prefer someone with additional feedback.